Which of the following is a built-in JavaScript object that allows you to create a series of variables to later manipulate?

The correct choice is the one that identifies a fundamental built-in JavaScript object designed specifically for handling collections of data. In JavaScript, an array serves as a structured way to store a sequence of values in a single variable. This allows for the efficient grouping and manipulation of these values, which can be of various types, including numbers, strings, and even other objects.

Using arrays, developers can easily perform a range of operations, such as adding, removing, or iterating through elements. This makes arrays particularly powerful for tasks that involve handling lists or sequences of items, such as user inputs, data sets, or other collections.

While it’s true that other options represent important JavaScript objects, they do not serve the same function of directly creating a series of indexed variables. String represents a sequence of characters; Object provides a way to create complex data structures where key-value pairs are utilized; Function defines executable code that can be called and reused. However, none of these inherently manage a series of indexed variables in the way that arrays specifically do. Thus, the array is the most appropriate choice for creating and manipulating a series of variables.